Strap for La Chaux-de-Fonds Flying Tourbillon Stainless Steel / Grey

The lug width of the WCF09TSE06SS01AA is 22 millimetres, measured externally between the two spring bars that emerge from the case. It is essential to order straps that respect this specification exactly to avoid mechanical play and possible damage to the attachment bearings.

For this 44-millimetre Swiss independent watchmaker timepiece, we recommend vegetable-tanned alligator or Shell Cordovan with controlled thickness (1.4–1.6mm). These materials respect the austere aesthetic of the La Chaux-de-Fonds line and develop natural patina over time. For daily use, vegetable-tanned black calf represents a balance between elegance and practicality.

Strap change is performed by removing the two lateral spring bars using a dedicated tool (spring bar tool). Position the tool tip in the small hole or notch of the pin, press lightly downwards, and simultaneously extract the pin from the case. Repeat on the opposite side. Insert the new spring bars into the case holes until you feel the locking click. Do not apply excessive force to avoid damage to the attachment points.

Yes, provided it has been manufactured to the 22mm specification. Milano Straps produces custom 22mm straps designed to this exact standard. Always verify that the strap is cut specifically for 22 millimetres of lug width: generic straps do not guarantee compatibility or mechanical security of attachment.

An alligator or vegetable-tanned calf strap, if subjected to ordinary maintenance (avoiding prolonged bathing, hydrating with specific creams every 6–12 months), maintains structural integrity for 3–5 years. Shell Cordovan, due to its chemical properties, resists longer (5–7 years). Lifespan depends on intensity of use, climatic conditions and dedicated care. Rotating multiple straps extends the overall life of each one.